Science Exam With MCQ Questions

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| By Gems05

Gems05

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Quizzes Created: 1 | Total Attempts: 180

Questions: 13 | Attempts: 180 | Updated: Mar 21, 2023

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1.

List the sequence correctly that shows the levels of organization for the structure and function in the human from least to greatest.
2.

What is a stimulus?
- A.
  
  An action or change in bahavior that occurs as the result of a stimulus
- B.
  
  An inborn behavior
- C.
  
  A change in an organisms surroundings that causes the organism to react
- D.
  
  A behavior that must be taught
Correct Answer
C. A change in an organisms surroundings that causes the organism to react

Explanation
A stimulus refers to a change in an organism's surroundings that triggers a reaction. It can be any external or internal factor that provokes a response from an organism. This response can be in the form of an action or a change in behavior. The stimulus can vary widely, such as a sudden loud noise causing a startle reflex or a change in temperature leading to an organism seeking shelter. Therefore, the correct answer is "a change in an organism's surroundings that causes the organism to react."

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3.

Which chamber of the heart pumps oxygen-poor blood to the heart?
- A.
  
  Right Ventricle
- B.
  
  Left Ventricle
- C.
  
  Right Atrium
- D.
  
  Left Atrium
Correct Answer
A. Right Ventricle

Explanation
The right ventricle is responsible for pumping oxygen-poor blood to the lungs. After receiving deoxygenated blood from the right atrium, the right ventricle contracts to push the blood through the pulmonary artery and into the lungs, where it will be oxygenated. This oxygen-rich blood will then return to the heart through the left atrium and left ventricle before being pumped out to the rest of the body.

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4.

Is this the correct pathway of food through the digestive system? mouth, esophagus, stomach, small intestine, large intestine, urethra, toilet
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The given pathway of food through the digestive system is correct. Food enters the mouth, passes through the esophagus, and reaches the stomach where it is further digested. From the stomach, it moves into the small intestine where nutrients are absorbed into the bloodstream. The remaining undigested food then enters the large intestine where water is absorbed, and finally, the waste material is eliminated through the rectum and anus, not the urethra, into the toilet. Therefore, the answer is true.

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5.

Please List the functions of the Skeletal system
6.

What are the blood vessels that carry blood away from the heart?
- A.
  
  Cappilaries
- B.
  
  Veins
- C.
  
  Arteries
- D.
  
  Blood vessels
Correct Answer
B. Veins

Explanation
Veins are the blood vessels that carry blood away from the heart. They transport deoxygenated blood from the body's tissues back to the heart, where it can be oxygenated again. Unlike arteries, veins have thinner walls and contain valves that prevent the backward flow of blood. This allows veins to efficiently return blood to the heart, completing the circulatory system. Capillaries, on the other hand, are tiny blood vessels that connect arteries and veins, facilitating the exchange of oxygen, nutrients, and waste products between the blood and body tissues.

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7.

The role of the Respitory System is to bring oxygen into the body.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The respiratory system is responsible for bringing oxygen into the body. It consists of organs such as the nose, trachea, and lungs, which work together to inhale oxygen from the air and deliver it to the bloodstream. This oxygen is then transported to cells throughout the body, where it is used for various metabolic processes. Therefore, the statement is true.

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8.

substance in the mouth contains enzymes that begins chemical digestion.

Correct Answer
Saliva

Explanation
Saliva is the correct answer because it is a substance in the mouth that contains enzymes which begin the process of chemical digestion. Saliva contains the enzyme amylase, which breaks down carbohydrates into smaller molecules. This process is the first step in the digestion of food in the mouth before it moves to the stomach for further digestion.

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4
9.

What does the somatic nervous system control?
10.

What tissue is only found in the heart?
- A.
  
  Epithelial
- B.
  
  Skeletal
- C.
  
  Cardiac
- D.
  
  None of Above
Correct Answer
C. Cardiac

Explanation
Cardiac tissue is the correct answer because it is the only type of tissue that is specifically found in the heart. Epithelial tissue is found in various parts of the body, not just the heart. Skeletal tissue is associated with the skeletal system, not the heart. "None of above" is not a valid option as cardiac tissue does exist and is unique to the heart.

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11.

Evolution is the change in species over long period of time.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Evolution refers to the process of change in species over a long period of time. It involves genetic variations and natural selection, leading to the development of new species or the modification of existing ones. This process is supported by extensive scientific evidence from various fields such as paleontology, genetics, and comparative anatomy. Therefore, the statement that evolution is the change in species over a long period of time is true.

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12.

Where do motor neurons send impulses to?

Science Exam With MCQ Questions

List the sequence correctly that shows the levels of organization for the structure and function in the human from least to greatest.

What is a stimulus?

Which chamber of the heart pumps oxygen-poor blood to the heart?

Is this the correct pathway of food through the digestive system? mouth, esophagus, stomach, small intestine, large intestine, urethra, toilet

Please List the functions of the Skeletal system

What are the blood vessels that carry blood away from the heart?

The role of the Respitory System is to bring oxygen into the body.

substance in the mouth contains enzymes that begins chemical digestion.

What does the somatic nervous system control?

What tissue is only found in the heart?

Evolution is the change in species over long period of time.

Where do motor neurons send impulses to?